Spindle.



PATENTED MAR. '7, 1905.

G. B. MOCRACKEN.

SPINDLE.

APPLIUATION FILED Nov. a. 1903. 4

i y rd W Il 4%/01 l W NITED STATES Patented March '7, 1905.

PATENT Fries.

SPINDLE.

SPECIFICATION forming part of Letters Patent No. 784,414., dated March 7, 1905.

Application filed November 3, 1903. Serial No. 179,704.

To all whom 'it may concern:

Be it known that I, GEORGE B. McCRAcKnN,

a citizen oi' the United States, and a resident' of l/Villimantic, in the county of l/Vindham and State of Connecticut, have invented a new and Improved Spindle, of which the following is a specification.

My invention relates to the class of devices in the use of which threads of cotton, silk, or other liber are wound in the process of man ufacture; and the object of my invention is to provide a device of this class that shall have simple and ei'ective means for preventing gyrations due to the deposit of an unbalanced load on the spindle as the thread accumulates thereon. A form oi' device in the use of which this object may be attained is illustrated in the accompanying drawings, in whichq Figure lis a view in central longitudinal section through a spindle embodying' my invention. Fig. 2 is a view in central longitudinal section through the bolster. Fig. 3 is a view in cross-section through the bolster on plane denoted by line 3 3 of Fig. Q. Fig. 4 is View in longitudinal section through the bolstercase. Fig. 5 is a view in cross-section through the bolster-case on plane denoted by dotted line 5 5 of Fig. 4.

Inthe accompanying' drawings the numeral l indicates a base piece or support that may be provided with any ordinary means common to devices of this class for attachment to a spindle-rail. This base piece or support may have an oil-tubel 2 for filling purposes and a hook 3 to overlie the whirl and retain the spindle in position. Ancck 4 projects upward from the base-piece, and in this neck is mounted a bolster 5, supporting a spindle-blade 6. This bolster vforms what is termed in the art relating to devices of this kind a "combined step and bolster bearing, the lower end of the bolster being recessed to receive the end of the spindle-blade. This bolster is enlarged, as at 7, and this enlargement has a slightly-curved or convexed surface adapted to contact with the inner surface of the wall of the neck 4, so that the bolster is allowed a slight tipping movement in all directions on this curved surface as a pivot or bearing. A pin 8 projects through the neck and into alengthwise slot in the bolster to prevent thelatter from turning movement. The spindle-blade is also provided with an oil-thrower 9 and a downward-extending sleeve 1(),bearing at its lower end a whirl 1I.

In devices of this class prior to my invention various means have been provided for allowing the spindle to tip to one side to accommodate itselfl to an unbalanced load deposited thereon, and thus avoid gyrations due to such unbalancedload; but such devices have not been entirely satis factory,owing to the fact that resilient means for opposing the tipping' movement of thespindle-blade have been such as to allow the spindle-blade to tip too far or to the opposite side of the axis of the blade and its unbalanced load, and while the gyrations in suoli devices have been reduced to some extent they are not avoided to an extent to render such devices entirely satisfactory. In other forms ot' devices provided for overcoming' this defect the desired length ot' base piece or support in a device ot' this class has not been suiiicient to provide necessary leverage for opposing' the tendency of the spindle-blmle to tip to one side under its unbalanced load.

By my improved device I have overcome this defect b v providing an effective cushion to resist the tipping movement of the spindleblade under an unbalanced load, so that it will not pass beyond the center of rotation of the blade and its load, or it' it does the move ment will be so slight as to be practically imperceptible. In carrying out my improvement I have provided a bolster-case I2, litting within the base piece or support to a degree to leave a slight space between the inner wall of the support and the outer surface of the bolster-case sul'licient to contain oil Jfor lubricating' purposes. This bolster-ease has a bearing in the bottom of the base piece or support and extends upward along' the bolster to a point quite close to the whirl 1I. As a load is unev'enly deposited upon the bobbin on the spindle-blade, the tendency of the lower end of the blade and of the bolster is to swing laterally. This lateral movement of the lower end of the bolster and blade is resisted by the bolster-case, which acts as a lever, with its lower end fulcrumed near the point of engagement of the bolster, with the lever and IOO its upper end located near the whirl at a distance remote from the fulcrum and weight and where such lateral movement is easily resisted. It will thus be seen that the bolstercase forms a lever acting upon the bolster and extending upward from its fulcrum or bearing, which lever resists at points above its fulcrum or bearing any lateral movement of the bolster, and consequently of the spindle, as a load may be unevenly deposited on the spindle, the bolster serving as the load or weight for the lever, which of course has its fulcrum located at a point removed from the point of contact with the bolster. By this construction I obtain a leverage amply sufficient for the purpose in hand and without necessitating the construction of a base piece or support of undesirable length. I also utilize the oil in the space between the base piece or support and the bolster-case as a cushion to effectively resist the tipping movement of the spindle and prevent its passing to the opposite side of the axis of rotation of the spindle-blade and its load. It will be noticed that while this tipping movement of the bolster-case and also of the bolster is resisted along their entire length there is a resistance at the top of the bolster-case which provides an extremely long leverage to resist this tipping movement. Y' Y The bottoms of the bolster and bolster-case are each of circular form, and the recesses in which said Iparts are supported are of corresponding shape. This construction causes the parts to maintain a perfect bearing lit between them, so that as the parts tip or swing from side to side the bearing is constantly ground to perfect tit, and, in fact, if the bearing should be slightly imperfect when the parts are first assembled the action would soon cause the bearing to become perfect in the fit between the parts.

The bottom of the bolster is provided with a slot 13, into which a pin 14 extends, the slot and pin being so constructed that the bolster is allowed to tip freely in all directions, Y

the connection forming practically a ball-joint, and a similar slot 15 and pin 16 are provided for the bolster-case for the same purpose.

It is obvious that the construction herein shown and described may be departed from to a considerable extent and yet embody the invention and that the space between the base piece or support and the bolster-case and between said bolster-case and the bolster may be provided in various ways-as, forinstance,

the space between the bolster and bolster-case may be provided in the same manner as the space between the bolster-case and base piece or support by turning down the outer surface of the inclosed member or the space between the base piece or support and the bolster-case by counterboring the inclosing member. I do not, therefore, intend to limit my invention to the precise forni of construction herein shown and described,'but intend to include all constructions which will come within the intent and scope of the invention.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In combination in a spindle, a base-piece, a bolster located in said base-piece, aspindleblade located in the bolster, means for rotating said blade, and a bolster-case engaging the lower end of the bolster and constituting a lever projecting upward from its fulcrum and resisting at its upper end lateral movement of the bolster and the spindle located therein.

2. In combination in a spindle, a base-piece, a bolster located in saidi base-piece, a spindleblade located in the bolster, means for rotating saidblade, and a bolster-case located within the base-piece and in engagement with the lower end of the bolster and having a space between its inner surface and the bolster and between its outer surface and the base-piece and constituting a lever projecting upward from its fulcrum and resisting at its upper end lateral movement of the bolster and the spindle located therein.

3. In combination in a spindle, a base piece or support, a bolster forming a step-bearing and with its lower end formed on the arc of a circle to fit a corresponding recess in a bolstercase, a spindle-blade supported by the bolster, means for rotating the blade, and a bolster-case located in the base piece or support and constituting a lever projecting' upward from its fulcrum and resisting at its upper end lateral movement of the bolster and the spindle-blade supported thereby.

4. In combination in a spindle, a base-piece, a bolster forming a step-bearing, a spindleblade located within the bolster, means for rotating' the spindle-blade, and a bolster-case in engagement with the bolster and having its lower end formed on an arc of a circle, said bolster-case constituting a lever projecting upward from its fulcrum and acting upon the bolster to resist lateral movement of the spinsurface and the bolster and between its outer l surface and the base-piece.

6. In combination in a spindle, an oil-cup, a bolster-case having its lower end formed on an arc of a circle to fit a correspondinglyformed recess in the oil-cup, said case extending upward within and with a slight space between it and the oil-cup, said case also having IOO IIS

a slot formed at its lower end` a pin projecting into said slot, a combined step and bolster bearing having; its lower end formed on an are of a circle to lit a correspondingly-formed recess in the bolster-case, and providing a slight space between said case and the bolster, said bolster also having a slot at its lower end.l a pin projecting into said slot, a blade secured within the bolster, and means for rotating the blade.

7. In combination in a spindle, a base-piece, a bolster located in the base, a spindle-blade located in the bolster, means for rotating the blade, and a bolster-ease in engagement with the lower end of the bolster and projecting upward to form a long lever to resist at its upper end lateral movements of the spindleblade.

8. In combination in a spindle, a base-piece, a bolster located in said base-piece, a spindleblade located in the bolster, means for rotating said blade, and a bolster-case composed of a single piece forming a lever fulcrumed at its lower end and acting upon tbe bolster and projecting upward from its fnlcrurn to resist at its 'upper end lateral movement of the spindle.

GEORGE B. MCCRACKEN.

Witnesses:

CHARLES W. TRYoN, GEORGE lV. MnLoNY. 

